Adjustable post for ratchet-drills.



Patented Dec.27, 1910.

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ADJUSTABLE POST FOR RATGHET DRILLS. APPLICATION FILED AUG. 25, 1909.

Patented Dec. 27, 1910.

$2; 156 WITNESSES m/m/mn Cfiajlg s .1? Hash) GFKMTMM %I7% ATTORNEYSCHARLES B. HASTINGS, OF NEW YORK, N. Y.

ADJUSTABLE POST FOR RATCHET-DRILLS.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Application filed August 25, 1909. Serial No. 514,531.

To all whom it may concern:

Be it known that I, CHARLES B. HASTINGS, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and Im rovedAdjustable Post for Ratchet-Drills, 0 which the following is a full,clear, and exact description.

This invention relates to a holder for ratchet drills such as are usedlargely in steel construction for drilling holes in the work.

The object of this invention is to produce a holding device for aratchet drill, which can be attached to a beam or plate and which willafford means for holding the ratchet drill at any inclination and insubstantially any position within the range of the device.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation showing the form of bracket which adaptsthe device for attaching the same to a beam such as an I- beam; Fig. 2is a vertical section taken on the line 2-2 of Fig. 1 and showingfurther details of the post and bracket; Fig. 3 is a side elevation ofan adjustable stem which is attached to the post; Fig. 4 is a verticalsection through an angle iron, and showing the form of bracket I employwhen adapting the device for attachment to a beam of this form; Fig. 5is a vertical section through a steel structural member of special formand showing another form of the means for securing the device, this viewillustrating particularly the adjustability of the device; Fig. 6 isavertical section through the base of a fastening foot of pneumatic typeand illustrating how the device may be applied to the surface of aplate; Fig. 7 is a cross section through a column, illustrating themanner in which the device may be attached to a member of this form; andFig. 8 is a detail plan showing an adjustable arm which is attached tothe stem shown in Fig. 3.

, Referring more particularly to the parts, and especially to Fig. 1,the device comprises a post 1, of cylindrical or round form,

the upper end of which is provided with a transverse slot 2 so that theupper end of the post presents oppositely disposed ears 3. Between theseears a stem 4 is rotatably mounted on a pivot pin or screw 5. The stem 1has an enlarged semi-circular head 6 which lies in the slot 2, and thishead is provided near its rim with a plurality of circumferentiallydisposed openings 7. The ears 3 are further provided with a removablelocking pin 8 which is adapted to be removed and passed through any oneof the openings 7. By placing this locking pin 8 in different openings,different locked positions of the stem 4 may be obtained. The post 1 maybe secured rigidly to an I-beam by means of two clamps 9, the lower endsof which are offset away from each other so as to form jaws 10 adaptedto engage the edges of the flange 11. of the I-beam, as indicated mostclearly in Fig. 2. The lower part of the post is provided with a pair ofparallel openings 12, lying in the same plane, which pass diametricallythrough the post so as to receive clamping bolts 13 and 14 which passthrough the post and through the clam s, as indicated. The up er one ofthese ad justing bolts is provide with a nut 15 which is adapted toclamp against the side of the post so as to secure it firmly against oneof the clamps. The ends of these bolts 13 and 14 pass through one of theclamps and are provided on their outer portions with nuts 16 which areadapted to draw the clamps together so as to engage the edges of theflange 11., as will be readily understood. \Vith this arrangement itwill be seen that the post can be firmly held between the clamps and theclamps can be securely held on the beam.

On the stem 4 there is provided a sliding arm 17, the inner end of whichis formed into a sleeve 18 which receives the stem, as shown. Thissleeve is provided with a clamping screw 19 which enables the arm to besecured to the stem at any point desired. Referring again to Fig. 2, inaddition to the pair of openings 12, I provide a second pair of openings20 which pass through the post in a plane at right angles to the planepassing through the openings 12. By reason of these openings 20, thepost 1 may be held between the clamps in two definite positions at rightangles to each other. WVhile the post is in one of these positions (seeFigs. 1 and 2) the sector 6 lies in a i S S: 1

plane coinciding with the general plane of the rail 11. In the otherposition, however, the sector 6 crosses this plane. It should be notedthat these openings 20 are represented as above the openings 12respectively, in Fig. 2, and in this position of the post the lower faceof the post is slightly elevated above the upper face of the beam, whichpermits the post to be adjusted downwardly as suggested. In neither ofthe positions of the post is it necessary for the post to seat its lowerend upon the beam. Its rigidity is secured entirely by the clamps. Inthis connection it should be understood that the openings 12 and 20 fitthe bolts nicely, so

that when the nut 15 is tightened. the post becomes very secure andrigid. It should be noted also that the clamps effectually prevent anytendency of the device to shift longitudinally of the beam.

In Fig. 4 I illustrate the manner in which the bracket is constructedwhen the device is to be attached to an angle iron 21 having ahorizontal flange 22. In order to attach the device to such a structuralshape, I provide a pair of angle brackets or clips 23 and '24, thelatter of which preferably has a wider web 25 than the web 26 of thebracket 23. The angle brackets or clips 23 and 24 are then applied tothe flange of the beam, as indicated, the angle bracket 24 beingarranged so that its web 25 is applied to the under side of the flange22. The angle bracket then presents an upwardly extending flange 27which is disposed opposite to the upwardly extending flange 28 of theangle bracket 23. The flanges 27 and 28 are connected by clamping bolts29 and 30 which are constructed and arranged similar to the bolts 13 and14, that is, the upper bolt 29 carries a nut 31 which clamps the side ofthe post 32, while both of the bolts carry nuts 33 which afford meansfor drawing the clamps toward each other. The post and various otherparts shown in this construction are identical with those appearing inFig. 2. The flange 26 of the upper angle bracket 23 which seats upon theupper side of the flange 22 is provided with a set screw or clampingscrew 34 which passes downwardly through the web 26 so that its pointcomes against the upper side of the flange 22.

On the arm 17 there is mounted a sliding sleeve 38, the details of whichare clearly shown in Fig. 8. This sliding sleeve is provided on one sidewith a clamping screw 39 which is adapted to engage the side of the armso as to hold the sleeve rigidly thereto. This sliding sleeve 38 carriesa center screw 40, the end of which is adapted to form a back center fora ratchet drill 41 mounted as shown in Fig. 1.

Fig. 1 shows how the device may be used for drilling a hole in avertical plane, that is,

drilling a hole in the upper face of a horizontal beam. In Fig. 5 1illustrate how the device can be adjusted so as to drill a hole in aninclined flange or plate 42 which is supposed to be connected with aplate 43 which may be horizontal, as shown. In order to adapt the drillholder to operate on the flange 42, the locking pin 45 will be removedand the stem 44 will be shifted into substantially the position shown,and the pin will then be replaced. The stem should be substantially atright angles to the surface of the flange 42 and the sleeve 46 can thenbe run out on the arm 47 to any point desired. In such a situation asthis I may use a special bracket 48 having a foot 49 in the form of aplate which rests upon the upper side of the plate 43, said plate havingan adjusting slot 50 which runs longitudinally of the plat-e. Throughthis slot passes an adjusting bolt 51. At one end of the foot 49 thespecial bracket 48 is provided with an enlarged socket 52 which receivesthe lower end of the post 53, as shown. In this post 53, two pairs ofopenings 54 are provided, in either pair of which removable bolts 55 maybe received, as indicated. This enables the post to be sw'u'ng around sothat the stem 44 may be swung in a plane at right angles to its normalposition, as suggested above.

Under some circumstances it may be impossible to find a beam or platesuch as described above, to which the device may be attached. Forinstance, it may be necessary to attach it to the upper surface of asmooth plate 56, as illustrated in Fig.6. In order to adapt the devicefor attachment to such a plate, I provide a socket 57 which receives thelower end of the post 58, as shown, and this socket is provided withpins 59 and 60 which pass through it and through the post so as tosecure the post in position, as indicated. This post is also providedwith two pairs of openings 61 disposed in planes at right angles to eachother; The lower portion of the socket 57 is expanded so as to form asubstantially hemispherical shell or bonnet 62, and to the inner side ofthis bonnet a cup 63 is secured, said cup being formed of hard rubber.The body of this cup is of hemispherical form so as to fit nicely to thecurvature of the bonnet 62, but its edge projects downwardly below theedge of the bonnet and is turned outwardly so as to form a broad mouthor flange 64 which seats on the surface of the plate, as shown. Theinterior of the cup forms a vacuum chamber 65 from which the air may beexhausted through a hose connection 66 and to which air may be admittedthrough a valve 67. It will be evident that when the air is exhaustedfrom the vacuum chamber, the atmospheric pressure on the post and thebonnet will force the base of the post be adjusted into any downwardland hold the same securely on the plate; t e stem 68 of the device maythen osition desired. Where the device is to be attached to a column 69such as shown in Fig. 7, I provide a split ring formed of two sections70 having small ears 71 at one side connected by an adjusting bolt 72.At the other side the ends of the sections 70 are extended so as to formlarge ears 73, between which the post is clamped by means of twoclamping bolts 75. These bolts pass through the ears and through thepost, so that when the nuts 76 are tightened up the post will besecurely clamped to the ring. As in the other forms descrlbed, this posthas two pairs of parallel bolt openings 77 disposed in planes at rightangles to each other so that the post may be shifted through 90,enabling the stem 78 to swing down in either of two planes at rightangles to each other.

Having thus described my invention, I claim as new and desire to secureby Letters l. A device of the class described, comprising a post havinga pair of openings tical plane forming an angle with said first verticalplane, means for rigidly securing said post to the work near the pointof application of the drill, said means having bolts passingtherethrough and adapted to pass through either pair of said openings,whereby said post may be held in different angular positions withrespect to the vertical axis thereof, an adjustable arm carried by saidpost, and means on said arm for adjustably supporting the butt end of adrill.

2. A device of the character described, comprising a 0st provided with anumber of holes exten ing iametrically through it, different groups ofsaid holes being arranged in definite planes, a plane corresponding toone group of said holes crossing another plane corresponding to anothergroup of said holes, bolts for extending through said holes, stationarymembers for engagjng said bolts, said stationary members eing for thispurpose provided with holes arranged in a definite plane so that aplurality of said bolts may be used for holdmg said post relatively tosaid stationary members, a rigid drill, and means on said post foradjustably supporting the butt end of a drill.

In testimony whereof I have signed my name to this s ecification in thepresence of two subscribing witnesses.

CHARLES E. HASTINGS.

\Vitnesses:

BENJAMIN Moms, ISAAC PINNER.

